The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 1996
Filed:
Sep. 26, 1994
Shunichi Shido, Sagamihara, JP;
Katsunori Hatanaka, Yokohama, JP;
Kunihiro Sakai, Isehara, JP;
Takahiro Oguchi, Ebina, JP;
Akihiko Yamano, Sagamihara, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A recording/reproduction of information is performed on a recording medium using a probe as follows. The relative movement between the probe and the recording medium along a track groove of the medium is performed on the basis of a predetermined drive signal. A voltage is applied to between the probe and the recording medium. A tunnel current flowing through the probe upon application of the voltage is detected so as to detect the track groove. A correction signal for correcting the drive signal is obtained on the basis of fuzzy deduction. The probe and the recording medium are driven relative to each other along the track groove in accordance with a drive signal corrected by the correction signal.